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Hand Reamers
9CrSi (Alloy Tool Steel) Tool
The 9CrSi steel is a low alloy tool steel and low speed cutting tool steel. It has high hardening capacity and high tempering stability. Good for wide ranges of applications.
Straight Flute
Straight flute tools allow chips to collect in the flutes when cutting. Well suited for most applications in shallow cuts. For reaming cylindrical shape holes.
Easy to Use
Can be hand operated by use of wrenches. Great for light cut, repair work, or simply for enlarging holes. Always keep reamers clean, and used with machine oil for long service use.
Features
- Designed with the base substrate without any additional coatings
- With high hardness and durability, the reamers provide finish cuts.
- Holes can be with exact size and shape after the reamers' processing.
Wide Applications
Used for handicraft processing, and bore machining. Suitable for accurate reaming in aluminum, cast iron, copper, plastic, wood, and other soft materials.
Cut and remove the thin layer metal on hole surface that has been processed, mainly to improve the precision of holes and reduce the surface roughness.Used for semi-finish machining and finish machining of holes.
Tom
Reviewed in Canada on January 15, 2025
good reamers for the price
William
Reviewed in the United States on February 20, 2024
Don't buy. Not accurate. Dulls first use. Junk.buy a more expensive one.
COP
Reviewed in the United States on October 7, 2024
I bought these to facilitate boring out some 3/16" brass bushings to .250". They worked just fine. As has been mentioned by others the packaging for them was not ideal; they came in single sealed plastic bag, not ideal for a "precision" cutting tool, but they did work just fine for me regardless of that.
Customer
Reviewed in the United States on May 12, 2023
alright
Fred J. Baldino
Reviewed in the United States on November 27, 2023
I used this reamer to do a counter bore on 4140 steel ,I used good cutting lube and took my time, the finished product came out well.
Doran Maxwell
Reviewed in the United States on October 28, 2023
I bought these to ream out the undersized cylinders on a few black powder revolvers. They cut smoothly and the reamed hole was the size it was supposed to be. They are a few thou bigger than ideal but that is not a flaw..they are what they claim. If I wanted the exact size that would be ideal I would have had to buy a very expensive custom ream.
O. Rettinger
Reviewed in the United States on August 15, 2022
So, first off, of the two reamers in the package, only one was actually .375" in diameter, with the other being .373" instead.Second, the grind finish on the tooling was extraordinarily rough. Fortunately, I have the other tools necessary to hone cutting tools, but I really shouldn't have to clean up a brand new tool, and make sure the cutting edge actually has clearances.And then, as the final insult, the one that was actually the correct size broke a whole section out the very first time I used it. This was while reaming out a .365" hole in soft aluminum, using a material appropriate cutting fluid, so it's not like I was being particularly taxing on the thing.So, either it isn't actually H8 tool steel, or it was heat treated incorrectly, or it's just junk. I'd have bought a better one if I could have found one on Amazon, so I guess I'm just going to have to get one from an actual tooling dealer.I can only recommend NOT purchasing this item, or any similar item from this manufacturer. I presume the rest of the line they carry is of equal "quality". Disappointing, as I have had good luck with items from this manufacturer in the past, though admittedly those were not machine tooling. Lesson learned, I suppose.
Eddie
Reviewed in the United States on November 30, 2022
The reamer was advertised as 1/4 reamer.It actually measures 0.240 “. Doesn’t team the correct size and therefore useless to me.
MOONRUNNER
Reviewed in the United States on December 3, 2021
They're decent, but definitely seeing stand up to much on hard metals. You will probably get 2 good uses and after that it'll take more work
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